#ifndef _CALCULATOR_H_
#define _CALCULATOR_H_
#include "Stack.h"
class Calculator
{
public:
	void run();
	void clear();

private:
	Stack<double> s;
	void enter(double num);
	bool getTwoOprands(double& opnd1, double& opnd2);
	void compute(char op);
	
};

#endif
